Palladium(II)-Catalyzed Oxidative C–H/C–H Coupling and Eliminative S<sub>N</sub><sup>H</sup> Reactions in Direct Functionalization of Imidazole Oxides with Indoles
作者:Mikhail V. Varaksin、Irina A. Utepova、Oleg N. Chupakhin、Valery N. Charushin
DOI:10.1021/jo301618b
日期:2012.10.19
Two novel synthetic approaches to realize the directC(sp2)–H bond functionalization in cyclic nitrones are reported. Palladium(II)-catalyzedoxidative C–C coupling of 2,2-dialkyl-4-phenyl-2H-imidazole 1-oxides with indoles was shown to result in the formation of 5-indolyl-3-yl derivatives, while nucleophilic substitution of hydrogen (SNH) at C(5) of the same imidazole system was found to afford the